High-speed infrared detection by uncooled photovoltaic quantum well infrared photodetectors
- 24 March 1997
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 70 (12) , 1602-1604
- https://doi.org/10.1063/1.118628
Abstract
We have investigated the temporal response of uncooled photovoltaic quantum well infrared photodetectors (PV QWIP) using 2 ps pulses from a free electron laser. We measured rise and fall times of 8 ps and 63 ps, respectively. We have also determined the temperature dependence of the voltage responsivity and resistance of the sample from 70 K to 300 K. Based on these measurements, we discuss the figures of merit of PV QWIPs in a high-bandwidth 50 environment.
Keywords
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